From 9fa99efc55a8c6d1fbe094031c54de89aaa4c308 Mon Sep 17 00:00:00 2001
From: cloudhead <self@cloudhead.net>
Date: Wed, 7 Jul 2010 12:20:59 +0200
Subject: [PATCH] don't re-eval ruleset

---
 lib/less/tree/ruleset.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/less/tree/ruleset.js b/lib/less/tree/ruleset.js
index 974c8068..90a5f801 100644
--- a/lib/less/tree/ruleset.js
+++ b/lib/less/tree/ruleset.js
@@ -7,6 +7,8 @@ tree.Ruleset = function (selectors, rules) {
 };
 tree.Ruleset.prototype = {
     eval: function (env) {
+        if (this.evaled) { return this }
+
         var rules = [];
 
         this.rules.forEach(function (rule) {
@@ -17,6 +19,8 @@ tree.Ruleset.prototype = {
             }
         });
         this.rules = rules;
+        this.evaled = true;
+
         return this;
     },
     match: function (args) {